Definitions - h
- Habitat
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- Habitat Banking
- In a similar manner to carbon offsets, in habitat banking landowners are
encouraged to restore degraded land or protect virgin forest to enhance its
conservation values.
In return, the landowner is permitted to sell credits to national or international companies or developers, enabling them to satisfy legal requirements compensating for the environmental impacts of their development projects in the region or elsewhere.
Although big in the US, where there is a $3bn market, habitat banking's global reach is nowhere near the size of carbon offsets.
Potential for schemes is particularly high in Central and South America, although concerns remain over monitoring and proving how effective projects really are.
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A dust or sandstorm that forms as cold downdraft's from a thunderstorm turbulently lift dust and sand into the air.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
Search the Web for HADcrut - Halogen Bulbs
Halogen bulbs are a form of energy efficient lighting that use around 25 per cent less energy than traditional incandescent bulbs.
Like traditional bulbs, Halogen bulbs use a tungsten filament, but they use a halogen gas inside the bulb rather than argon or nitrogen, making the filament last longer.
Around half the size of traditional bulbs, they are most commonly used in fixed ceiling down-lighters.
It is expected that some lower-efficiency Halogen bulbs will be banned alongside incandescent bulbs under upcoming EU regulations, though the sale of higher efficiency models will still be permitted.
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Bromine-containing compounds with long atmospheric lifetimes whose breakdown in the stratosphere causes depletion of ozone. Halons are used in firefighting.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
Search the Web for Hazardous Waste - Heat Island Effect
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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Distant lightning that illuminates the sky but is too far away for its thunder to be heard.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
Search the Web for Herbicide - Heterotrophs
Heterotrophs are the organisms in an ecology which do not produce their own food. These are all the consumers, regardless of their level.
Search the Web for Heterotrophs- High-fructose Corn Syrup
- High-fructose corn syrup (HFCS) (also called glucose-fructose, isoglucose and glucose-fructose syrup) is a sweetener made from corn starch that has been processed by glucose isomerase to convert some of its glucose into fructose. HFCS was first marketed in the early 1970s by the Clinton Corn Processing Company, together with the Japanese Agency of Industrial Science and Technology where the enzyme was discovered in 1965.As a sweetener, HFCS is often compared to granulated sugar, but manufacturing advantages of HFCS over sugar include that it is easier to handle and more cost-effective.Apart from comparisons between HFCS and table sugar, there is some evidence that the over-consumption of added sugar in any form, including HFCS, is a major health problem, especially for the onset of obesity.Consuming added sugars, particularly as sweetened soft drinks, is strongly linked to weight gain. Also, like most sugars, HFCS can create addictive tendencies in those who consume it regularly in volume (see That Sugar Film for more details on how a high sugar 'Low Fat' diet can be dangerous to your health, and the addictive tendencies that result).The World Health Organization has recommended that people limit their consumption of added sugars to 10% of calories, but experts say that typical consumption of empty calories in the United States is nearly twice that level.Search the Web for High-fructose Corn Syrup
- Hockey Stick Graph
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
Search the Web for Hockey Stick Graph - Home Battery System
A Home Battery System is a system that is used to time shift cheap electricity to a more expensive time period by the use of a battery.
The batteries in such a system need to be able to be deep cycled typically on a daily basis to allow the system to pay for itself in a reasonable time frame. They are often combined with high efficiency inverters.Search the Web for Home Battery System- Homosphere
The atmosphere up to 80 km (50 mi) in which the proportionality of principal gaseous constituents, such as oxygen and nitrogen, is constant.
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A "normal" wind turbine design, in which the shaft is parallel to the ground, and the blades are perpendicular to the ground.
Search the Web for Horizontal Axis Wind Turbine- Hot Water Recirculator
A hot water recirculator is basically a pump that is put in at the furthest part of the hot water system in your house, this pump has a return line back to the hot water tank. A thermometer is used to control when the pump goes on, idea is that hotter water is kept in the pipe at all times, so reducing the time it takes for the hot water to 'appear' at the tap or shower head.
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This is good for existing installations, but do make sure the pipes are well lagged. For new builds it is often easier to use a smaller bore pipe, so less water rests in the pipe so it draws from the hot water tank quicker.- Human Food Chain
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. There are three naturally occurring isotopes, with 12C and 13C being stable, while 14C is radioactive, decaying with a half-life of about 5730 years. Carbon is one of the few elements known since antiquity. The name "carbon" comes from Latin language carbo, coal.
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See the full entry on wikipedia
- Humus
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- Hybrid Flow Battery
- The hybrid flow battery uses one or more electroactive components deposited as a solid layer. In this case, the electrochemical cell contains one battery electrode and one fuel cell electrode. This type is limited in energy by the surface area of the electrode.Hybrid flow batteries include the zinc-bromine, zinc–cerium and lead–acid flow batteries.Search the Web for Hybrid Flow Battery
- Hybrid System
Energy Generation: A solar electric or photovoltaic system that includes other sources of electricity generation, such as wind or diesel generators.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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- Search the Web for Hydrology
- Hydrolysis
The decomposition of organic compounds by interaction with water.
Search the Web for Hydrolysis- Hydronic Floor Heating
Hydronic flooring heating is where a network of water carrying pipes are embedded into the floor to transfer heat from a heat source (say solar hot water) to the floor - thereby providing a comfortable living environment. The only downside with such systems is that they depend upon the Sun to provide the warmth, this is often out of cycle with the demand for heat - i.e. you need to be warm in the evening and during cloudy days. Thermal mass can help phase shift the heating but you will often require additional back up heating as well.
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This is often something which can only be done on a new build as you need to build the pipes into the structure of the floor. An option after build is to use a roof space heat recovery system to transfer the hot air from the roof into the living space by way of a filter and fan set up. The advantage with this is that such a system can also provide cooling air in Winter (as the roof space cools quicker than the living space below at night).
- Hydroponics
- The growing of
plants,
especially vegetables, in
water containing essential mineral nutrients rather than in soil.
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The totality of water encompassing the Earth, comprising all the bodies of water; ice, and water vapor in the atmosphere.
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Ecology is the scientific study of the distribution and abundance of life and the interactions between organisms and their natural environment.
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